/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sep20-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:30:45,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:30:45,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:30:45,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:30:45,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:30:45,146 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:30:45,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:30:45,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:30:45,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:30:45,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:30:45,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:30:45,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:30:45,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:30:45,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:30:45,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:30:45,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:30:45,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:30:45,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:30:45,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:30:45,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:30:45,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:30:45,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:30:45,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:30:45,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:30:45,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:30:45,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:30:45,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:30:45,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:30:45,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:30:45,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:30:45,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:30:45,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:30:45,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:30:45,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:30:45,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:30:45,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:30:45,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:30:45,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:30:45,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:30:45,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:30:45,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:30:45,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 18:30:45,223 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:30:45,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:30:45,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:30:45,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:30:45,225 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:30:45,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:30:45,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:30:45,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:30:45,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:30:45,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:30:45,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:30:45,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:30:45,231 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:30:45,231 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:30:45,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:30:45,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:30:45,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:30:45,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:30:45,232 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:30:45,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:30:45,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:30:45,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:30:45,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:30:45,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:30:45,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:30:45,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:30:45,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:30:45,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:30:45,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:30:45,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 18:30:45,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:30:45,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:30:45,566 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:30:45,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:30:45,568 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:30:45,569 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-12 18:30:45,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/407c9992a/12558ebe1d6042d08f87f7dfe371a5c3/FLAG776cf994e [2020-10-12 18:30:46,107 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:30:46,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sep20-1.i [2020-10-12 18:30:46,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/407c9992a/12558ebe1d6042d08f87f7dfe371a5c3/FLAG776cf994e [2020-10-12 18:30:46,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/407c9992a/12558ebe1d6042d08f87f7dfe371a5c3 [2020-10-12 18:30:46,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:30:46,511 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:30:46,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:46,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:30:46,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:30:46,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46, skipping insertion in model container [2020-10-12 18:30:46,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:30:46,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:30:46,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:46,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:30:46,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:30:46,787 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:30:46,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46 WrapperNode [2020-10-12 18:30:46,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:30:46,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:30:46,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:30:46,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:30:46,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... [2020-10-12 18:30:46,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:30:46,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:30:46,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:30:46,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:30:46,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:30:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:30:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:30:46,977 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2020-10-12 18:30:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:30:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:30:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:30:46,978 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2020-10-12 18:30:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:30:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:30:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:30:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:30:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:30:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:30:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:30:47,310 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:30:47,310 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:30:47,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:47 BoogieIcfgContainer [2020-10-12 18:30:47,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:30:47,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:30:47,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:30:47,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:30:47,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:30:46" (1/3) ... [2020-10-12 18:30:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f26082f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:47, skipping insertion in model container [2020-10-12 18:30:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:30:46" (2/3) ... [2020-10-12 18:30:47,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f26082f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:30:47, skipping insertion in model container [2020-10-12 18:30:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:30:47" (3/3) ... [2020-10-12 18:30:47,327 INFO L109 eAbstractionObserver]: Analyzing ICFG sep20-1.i [2020-10-12 18:30:47,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:30:47,347 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:30:47,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:30:47,388 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:30:47,388 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:30:47,388 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:30:47,388 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:30:47,389 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:30:47,389 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:30:47,389 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:30:47,389 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:30:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 18:30:47,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:30:47,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:47,413 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:47,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 794343521, now seen corresponding path program 1 times [2020-10-12 18:30:47,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:47,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104997021] [2020-10-12 18:30:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:47,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:47,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:48,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:30:48,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:30:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1124 [2020-10-12 18:30:48,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:48,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:30:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:48,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:30:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:30:48,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:48,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:48,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:48,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:30:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:48,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:48,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:48,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:48,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:30:48,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:48,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:30:48,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:48,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:48,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:48,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-12 18:30:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:48,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:48,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:49,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:49,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:49,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:30:49,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:30:49,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:49,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:30:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:49,081 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:49,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104997021] [2020-10-12 18:30:49,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:30:49,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:30:49,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217582445] [2020-10-12 18:30:49,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:30:49,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:49,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:30:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:30:49,109 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 11 states. [2020-10-12 18:30:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:49,426 INFO L93 Difference]: Finished difference Result 86 states and 126 transitions. [2020-10-12 18:30:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:30:49,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:30:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:49,441 INFO L225 Difference]: With dead ends: 86 [2020-10-12 18:30:49,441 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:30:49,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:30:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:30:49,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2020-10-12 18:30:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 18:30:49,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2020-10-12 18:30:49,513 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 32 [2020-10-12 18:30:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:49,514 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2020-10-12 18:30:49,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:30:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2020-10-12 18:30:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 18:30:49,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:49,527 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:49,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:30:49,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:49,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1764294835, now seen corresponding path program 1 times [2020-10-12 18:30:49,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:49,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488877545] [2020-10-12 18:30:49,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:49,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 18:30:50,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-12 18:30:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:30:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:50,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:50,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:30:50,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:50,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:50,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:50,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:50,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:50,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 18:30:50,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:50,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:30:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:50,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:50,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:30:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 18:30:50,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:30:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:30:50,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:50,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:30:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:51,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 18:30:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 18:30:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:30:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 18:30:51,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:30:51,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488877545] [2020-10-12 18:30:51,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:51,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:30:51,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634161201] [2020-10-12 18:30:51,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:30:51,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:51,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:30:51,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:30:51,054 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand 5 states. [2020-10-12 18:30:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:51,178 INFO L93 Difference]: Finished difference Result 62 states and 86 transitions. [2020-10-12 18:30:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:30:51,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-10-12 18:30:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:51,180 INFO L225 Difference]: With dead ends: 62 [2020-10-12 18:30:51,180 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 18:30:51,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:30:51,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 18:30:51,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-10-12 18:30:51,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-12 18:30:51,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-12 18:30:51,199 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 35 [2020-10-12 18:30:51,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:51,199 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-12 18:30:51,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:30:51,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-12 18:30:51,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-12 18:30:51,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:51,204 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:51,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:30:51,204 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:51,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:51,205 INFO L82 PathProgramCache]: Analyzing trace with hash -738945770, now seen corresponding path program 2 times [2020-10-12 18:30:51,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:51,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908731897] [2020-10-12 18:30:51,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:51,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:52,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:30:56,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:30:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 18:30:56,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:30:56,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:56,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:30:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:30:56,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:56,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:30:56,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:30:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:30:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:30:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:30:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:56,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:30:56,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 18:30:56,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:56,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-12 18:30:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:56,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:56,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-12 18:30:56,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:56,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:56,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:30:56,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:30:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:30:56,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-12 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:30:56,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:30:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:30:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-12 18:30:56,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908731897] [2020-10-12 18:30:56,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:30:56,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 18:30:56,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505902922] [2020-10-12 18:30:56,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 18:30:56,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:30:56,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 18:30:56,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 18:30:56,506 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand 6 states. [2020-10-12 18:30:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:30:56,671 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2020-10-12 18:30:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 18:30:56,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-12 18:30:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:30:56,673 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:30:56,673 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:30:56,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:30:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:30:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-12 18:30:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 18:30:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2020-10-12 18:30:56,688 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 50 [2020-10-12 18:30:56,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:30:56,688 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2020-10-12 18:30:56,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 18:30:56,688 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2020-10-12 18:30:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:30:56,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:30:56,694 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:30:56,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:30:56,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:30:56,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:30:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1066977793, now seen corresponding path program 3 times [2020-10-12 18:30:56,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:30:56,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204623251] [2020-10-12 18:30:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:30:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:30:56,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:30:56,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:01,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:01,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:31:01,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:01,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5219 [2020-10-12 18:31:01,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:31:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:01,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:31:01,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:02,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 18:31:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:02,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:02,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:02,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-12 18:31:02,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:02,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 18:31:02,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:02,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:03,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:03,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-12 18:31:03,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:03,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:03,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:03,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:03,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:03,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:03,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:03,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-12 18:31:03,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:03,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:03,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-12 18:31:03,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204623251] [2020-10-12 18:31:03,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:03,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:31:03,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455143990] [2020-10-12 18:31:03,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:31:03,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:03,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:31:03,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:31:03,542 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 14 states. [2020-10-12 18:31:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:04,293 INFO L93 Difference]: Finished difference Result 89 states and 127 transitions. [2020-10-12 18:31:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:31:04,294 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-12 18:31:04,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:04,297 INFO L225 Difference]: With dead ends: 89 [2020-10-12 18:31:04,297 INFO L226 Difference]: Without dead ends: 85 [2020-10-12 18:31:04,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-12 18:31:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 63. [2020-10-12 18:31:04,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:31:04,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2020-10-12 18:31:04,326 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 59 [2020-10-12 18:31:04,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:04,328 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2020-10-12 18:31:04,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:31:04,328 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2020-10-12 18:31:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:31:04,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:04,332 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:04,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:31:04,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash -386919423, now seen corresponding path program 1 times [2020-10-12 18:31:04,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:04,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891244318] [2020-10-12 18:31:04,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:04,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:04,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:31:09,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:09,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:31:09,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:31:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:31:09,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 18:31:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:09,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:09,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:09,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:09,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:09,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:09,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:09,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:09,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:09,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-12 18:31:09,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:09,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:09,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:09,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:09,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:31:09,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 18:31:09,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:09,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:09,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:09,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:10,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:31:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-12 18:31:10,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891244318] [2020-10-12 18:31:10,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:10,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:31:10,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109895033] [2020-10-12 18:31:10,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:31:10,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:10,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:31:10,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:31:10,193 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 10 states. [2020-10-12 18:31:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:10,955 INFO L93 Difference]: Finished difference Result 176 states and 254 transitions. [2020-10-12 18:31:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:31:10,955 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-12 18:31:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:10,958 INFO L225 Difference]: With dead ends: 176 [2020-10-12 18:31:10,958 INFO L226 Difference]: Without dead ends: 126 [2020-10-12 18:31:10,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-12 18:31:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 117. [2020-10-12 18:31:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-12 18:31:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2020-10-12 18:31:11,006 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 59 [2020-10-12 18:31:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:11,007 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2020-10-12 18:31:11,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:31:11,007 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2020-10-12 18:31:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-12 18:31:11,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:11,017 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:11,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:31:11,017 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:11,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:11,018 INFO L82 PathProgramCache]: Analyzing trace with hash -808812355, now seen corresponding path program 2 times [2020-10-12 18:31:11,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:11,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101200665] [2020-10-12 18:31:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:11,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:12,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:16,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 18:31:16,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:31:16,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:31:16,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 18:31:16,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:31:16,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:16,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:16,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:16,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:16,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:16,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:16,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:16,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:16,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:16,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:16,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 18:31:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:31:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 18:31:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:31:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:16,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:16,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:16,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:16,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:31:16,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:16,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:16,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:16,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:16,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:16,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 18:31:16,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:16,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-12 18:31:16,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:16,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:16,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:16,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:31:16,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 13 proven. 129 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-12 18:31:16,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101200665] [2020-10-12 18:31:16,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:16,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:31:16,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957965959] [2020-10-12 18:31:16,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:31:16,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:16,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:31:16,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:16,757 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand 15 states. [2020-10-12 18:31:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:17,530 INFO L93 Difference]: Finished difference Result 325 states and 516 transitions. [2020-10-12 18:31:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:31:17,533 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-12 18:31:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:17,537 INFO L225 Difference]: With dead ends: 325 [2020-10-12 18:31:17,538 INFO L226 Difference]: Without dead ends: 220 [2020-10-12 18:31:17,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:31:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-12 18:31:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 197. [2020-10-12 18:31:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-12 18:31:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 297 transitions. [2020-10-12 18:31:17,595 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 297 transitions. Word has length 59 [2020-10-12 18:31:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:17,598 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 297 transitions. [2020-10-12 18:31:17,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:31:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 297 transitions. [2020-10-12 18:31:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:31:17,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:17,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:17,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:31:17,605 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:17,606 INFO L82 PathProgramCache]: Analyzing trace with hash -65292490, now seen corresponding path program 4 times [2020-10-12 18:31:17,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:17,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307449577] [2020-10-12 18:31:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:17,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:17,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:22,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:31:22,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:31:22,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:31:22,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:22,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:22,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:22,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:22,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:22,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:22,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:22,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:22,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:31:22,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:22,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:22,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:31:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:22,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:22,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:22,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:22,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:22,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:31:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:22,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:31:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:31:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 66 proven. 132 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:31:22,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307449577] [2020-10-12 18:31:22,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:22,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:31:22,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110911393] [2020-10-12 18:31:22,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:31:22,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:22,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:31:22,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:31:22,875 INFO L87 Difference]: Start difference. First operand 197 states and 297 transitions. Second operand 8 states. [2020-10-12 18:31:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:23,081 INFO L93 Difference]: Finished difference Result 409 states and 636 transitions. [2020-10-12 18:31:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:31:23,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-12 18:31:23,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:23,086 INFO L225 Difference]: With dead ends: 409 [2020-10-12 18:31:23,087 INFO L226 Difference]: Without dead ends: 241 [2020-10-12 18:31:23,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-12 18:31:23,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 222. [2020-10-12 18:31:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-12 18:31:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 329 transitions. [2020-10-12 18:31:23,127 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 329 transitions. Word has length 68 [2020-10-12 18:31:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:23,128 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 329 transitions. [2020-10-12 18:31:23,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:31:23,128 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 329 transitions. [2020-10-12 18:31:23,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-12 18:31:23,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:23,132 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:23,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:31:23,132 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:23,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1783214881, now seen corresponding path program 5 times [2020-10-12 18:31:23,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:23,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388585879] [2020-10-12 18:31:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:23,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:23,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:23,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 18:31:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:31:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:28,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:28,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:28,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:28,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:28,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:28,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 18:31:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:28,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:28,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:28,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 18:31:28,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:28,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:28,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:28,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:28,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:31:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:28,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:28,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 18:31:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:28,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 18:31:28,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:28,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:31:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:28,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-12 18:31:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 105 proven. 210 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-12 18:31:28,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388585879] [2020-10-12 18:31:28,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:28,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:31:28,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720538826] [2020-10-12 18:31:28,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:31:28,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:28,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:31:28,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:31:28,509 INFO L87 Difference]: Start difference. First operand 222 states and 329 transitions. Second operand 9 states. [2020-10-12 18:31:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:28,733 INFO L93 Difference]: Finished difference Result 484 states and 774 transitions. [2020-10-12 18:31:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:31:28,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-10-12 18:31:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:28,737 INFO L225 Difference]: With dead ends: 484 [2020-10-12 18:31:28,737 INFO L226 Difference]: Without dead ends: 271 [2020-10-12 18:31:28,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:31:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-12 18:31:28,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 251. [2020-10-12 18:31:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-12 18:31:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 367 transitions. [2020-10-12 18:31:28,777 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 367 transitions. Word has length 77 [2020-10-12 18:31:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:28,778 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 367 transitions. [2020-10-12 18:31:28,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:31:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 367 transitions. [2020-10-12 18:31:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:31:28,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:28,782 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:28,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:31:28,783 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:28,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1461104298, now seen corresponding path program 6 times [2020-10-12 18:31:28,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:28,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559617688] [2020-10-12 18:31:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:33,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:31:33,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:31:33,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:33,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:33,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:33,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:33,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:33,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:33,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:33,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:33,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:33,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:33,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:33,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:33,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:31:33,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:33,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:33,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:31:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:33,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:33,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:34,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:31:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:34,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:31:34,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:31:34,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 153 proven. 306 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:31:34,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559617688] [2020-10-12 18:31:34,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:34,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:31:34,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688050375] [2020-10-12 18:31:34,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:31:34,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:34,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:31:34,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:31:34,192 INFO L87 Difference]: Start difference. First operand 251 states and 367 transitions. Second operand 10 states. [2020-10-12 18:31:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:34,450 INFO L93 Difference]: Finished difference Result 523 states and 787 transitions. [2020-10-12 18:31:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:31:34,451 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-12 18:31:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:34,454 INFO L225 Difference]: With dead ends: 523 [2020-10-12 18:31:34,454 INFO L226 Difference]: Without dead ends: 301 [2020-10-12 18:31:34,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:31:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-12 18:31:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 281. [2020-10-12 18:31:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-12 18:31:34,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 407 transitions. [2020-10-12 18:31:34,489 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 407 transitions. Word has length 86 [2020-10-12 18:31:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:34,489 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 407 transitions. [2020-10-12 18:31:34,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:31:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 407 transitions. [2020-10-12 18:31:34,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-12 18:31:34,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:34,494 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:34,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:31:34,495 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:34,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:34,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1543869505, now seen corresponding path program 7 times [2020-10-12 18:31:34,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:34,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859160195] [2020-10-12 18:31:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:39,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:39,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:39,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:39,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:39,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:39,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:39,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:39,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:39,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:39,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:39,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:39,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 18:31:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:39,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:31:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:39,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:39,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:40,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 18:31:40,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 18:31:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 210 proven. 420 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-12 18:31:40,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859160195] [2020-10-12 18:31:40,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:40,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:31:40,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341117670] [2020-10-12 18:31:40,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:31:40,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:31:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:31:40,055 INFO L87 Difference]: Start difference. First operand 281 states and 407 transitions. Second operand 11 states. [2020-10-12 18:31:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:40,328 INFO L93 Difference]: Finished difference Result 603 states and 932 transitions. [2020-10-12 18:31:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:31:40,328 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 95 [2020-10-12 18:31:40,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:40,332 INFO L225 Difference]: With dead ends: 603 [2020-10-12 18:31:40,332 INFO L226 Difference]: Without dead ends: 331 [2020-10-12 18:31:40,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:31:40,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-12 18:31:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 311. [2020-10-12 18:31:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-12 18:31:40,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 447 transitions. [2020-10-12 18:31:40,367 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 447 transitions. Word has length 95 [2020-10-12 18:31:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:40,367 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 447 transitions. [2020-10-12 18:31:40,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:31:40,367 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 447 transitions. [2020-10-12 18:31:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:31:40,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:40,372 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:40,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:31:40,372 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:40,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:40,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1095277706, now seen corresponding path program 8 times [2020-10-12 18:31:40,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:40,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338117800] [2020-10-12 18:31:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 18:31:45,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:45,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:45,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:45,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:31:45,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:45,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-12 18:31:45,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:45,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:45,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:31:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:45,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:45,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:31:45,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-12 18:31:45,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:31:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:45,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:31:45,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:45,922 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 276 proven. 552 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:31:45,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338117800] [2020-10-12 18:31:45,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:45,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:31:45,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404765167] [2020-10-12 18:31:45,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:31:45,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:45,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:31:45,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:31:45,925 INFO L87 Difference]: Start difference. First operand 311 states and 447 transitions. Second operand 12 states. [2020-10-12 18:31:46,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:46,212 INFO L93 Difference]: Finished difference Result 643 states and 947 transitions. [2020-10-12 18:31:46,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:31:46,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 104 [2020-10-12 18:31:46,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:46,218 INFO L225 Difference]: With dead ends: 643 [2020-10-12 18:31:46,218 INFO L226 Difference]: Without dead ends: 361 [2020-10-12 18:31:46,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:31:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-10-12 18:31:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 341. [2020-10-12 18:31:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-10-12 18:31:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 487 transitions. [2020-10-12 18:31:46,264 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 487 transitions. Word has length 104 [2020-10-12 18:31:46,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:46,265 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 487 transitions. [2020-10-12 18:31:46,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:31:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 487 transitions. [2020-10-12 18:31:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-12 18:31:46,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:46,272 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:46,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:31:46,272 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:46,273 INFO L82 PathProgramCache]: Analyzing trace with hash -799436129, now seen corresponding path program 9 times [2020-10-12 18:31:46,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:46,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774509240] [2020-10-12 18:31:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:51,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:51,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:51,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:51,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:51,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:51,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:51,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-12 18:31:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 18:31:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:51,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:51,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-12 18:31:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:51,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:51,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:51,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 18:31:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 351 proven. 702 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-12 18:31:52,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774509240] [2020-10-12 18:31:52,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:52,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:31:52,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446009833] [2020-10-12 18:31:52,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:31:52,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:31:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:31:52,002 INFO L87 Difference]: Start difference. First operand 341 states and 487 transitions. Second operand 13 states. [2020-10-12 18:31:52,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:52,327 INFO L93 Difference]: Finished difference Result 723 states and 1092 transitions. [2020-10-12 18:31:52,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:31:52,327 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 113 [2020-10-12 18:31:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:52,330 INFO L225 Difference]: With dead ends: 723 [2020-10-12 18:31:52,331 INFO L226 Difference]: Without dead ends: 391 [2020-10-12 18:31:52,335 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:31:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-10-12 18:31:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 371. [2020-10-12 18:31:52,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-12 18:31:52,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 527 transitions. [2020-10-12 18:31:52,367 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 527 transitions. Word has length 113 [2020-10-12 18:31:52,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:52,367 INFO L479 AbstractCegarLoop]: Abstraction has 371 states and 527 transitions. [2020-10-12 18:31:52,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:31:52,368 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 527 transitions. [2020-10-12 18:31:52,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:31:52,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:52,373 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:52,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:31:52,374 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:52,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash -178262634, now seen corresponding path program 10 times [2020-10-12 18:31:52,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:52,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315645608] [2020-10-12 18:31:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:52,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:57,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:31:57,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:31:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-12 18:31:57,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 18:31:57,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:57,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:57,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:31:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:57,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:57,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:31:57,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:57,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:31:57,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:31:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:31:57,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:31:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:31:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:57,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:57,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:57,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:57,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-12 18:31:57,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:57,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:57,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:31:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:58,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:31:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:31:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:58,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:31:58,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:31:58,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:31:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-12 18:31:58,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:31:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:31:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:31:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:31:58,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:31:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 435 proven. 870 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:31:58,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315645608] [2020-10-12 18:31:58,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:31:58,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:31:58,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836769536] [2020-10-12 18:31:58,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:31:58,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:31:58,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:31:58,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:31:58,719 INFO L87 Difference]: Start difference. First operand 371 states and 527 transitions. Second operand 14 states. [2020-10-12 18:31:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:31:59,185 INFO L93 Difference]: Finished difference Result 763 states and 1107 transitions. [2020-10-12 18:31:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:31:59,186 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 122 [2020-10-12 18:31:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:31:59,192 INFO L225 Difference]: With dead ends: 763 [2020-10-12 18:31:59,192 INFO L226 Difference]: Without dead ends: 421 [2020-10-12 18:31:59,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:31:59,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-12 18:31:59,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 401. [2020-10-12 18:31:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-12 18:31:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 567 transitions. [2020-10-12 18:31:59,258 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 567 transitions. Word has length 122 [2020-10-12 18:31:59,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:31:59,259 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 567 transitions. [2020-10-12 18:31:59,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:31:59,259 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 567 transitions. [2020-10-12 18:31:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-12 18:31:59,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:59,267 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:59,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:31:59,268 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:59,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:59,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2088354175, now seen corresponding path program 11 times [2020-10-12 18:31:59,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:59,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557246419] [2020-10-12 18:31:59,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:04,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:04,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 18:32:04,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:32:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:04,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:04,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:04,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:04,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:04,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:04,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:04,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:04,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:04,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:32:04,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:04,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:32:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:32:05,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-10-12 18:32:05,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:05,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:32:05,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-12 18:32:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 18:32:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1698 backedges. 528 proven. 1056 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 18:32:05,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557246419] [2020-10-12 18:32:05,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:05,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:32:05,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536969555] [2020-10-12 18:32:05,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:32:05,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:05,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:32:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:32:05,567 INFO L87 Difference]: Start difference. First operand 401 states and 567 transitions. Second operand 15 states. [2020-10-12 18:32:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:05,989 INFO L93 Difference]: Finished difference Result 843 states and 1252 transitions. [2020-10-12 18:32:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:32:05,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 131 [2020-10-12 18:32:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:05,996 INFO L225 Difference]: With dead ends: 843 [2020-10-12 18:32:05,996 INFO L226 Difference]: Without dead ends: 451 [2020-10-12 18:32:06,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:32:06,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-10-12 18:32:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 431. [2020-10-12 18:32:06,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-12 18:32:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 607 transitions. [2020-10-12 18:32:06,066 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 607 transitions. Word has length 131 [2020-10-12 18:32:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:06,067 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 607 transitions. [2020-10-12 18:32:06,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:32:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 607 transitions. [2020-10-12 18:32:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:32:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:06,078 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:06,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:32:06,078 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:06,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:06,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2017259446, now seen corresponding path program 12 times [2020-10-12 18:32:06,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:06,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647093163] [2020-10-12 18:32:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:06,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:32:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:32:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:11,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:11,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:11,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:11,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:11,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:32:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:11,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:11,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:11,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:32:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:12,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:12,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:32:12,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2013 backedges. 630 proven. 1260 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:32:12,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647093163] [2020-10-12 18:32:12,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:12,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:32:12,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528573635] [2020-10-12 18:32:12,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:32:12,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:12,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:32:12,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:32:12,339 INFO L87 Difference]: Start difference. First operand 431 states and 607 transitions. Second operand 16 states. [2020-10-12 18:32:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:12,769 INFO L93 Difference]: Finished difference Result 883 states and 1267 transitions. [2020-10-12 18:32:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:32:12,769 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 140 [2020-10-12 18:32:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:12,775 INFO L225 Difference]: With dead ends: 883 [2020-10-12 18:32:12,775 INFO L226 Difference]: Without dead ends: 481 [2020-10-12 18:32:12,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:32:12,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-12 18:32:12,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 461. [2020-10-12 18:32:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-12 18:32:12,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 647 transitions. [2020-10-12 18:32:12,821 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 647 transitions. Word has length 140 [2020-10-12 18:32:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:12,821 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 647 transitions. [2020-10-12 18:32:12,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:32:12,821 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 647 transitions. [2020-10-12 18:32:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-12 18:32:12,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:12,830 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:12,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:32:12,831 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:12,831 INFO L82 PathProgramCache]: Analyzing trace with hash -427755425, now seen corresponding path program 13 times [2020-10-12 18:32:12,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:12,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564243970] [2020-10-12 18:32:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:12,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:12,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:17,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:17,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:17,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:17,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:18,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:18,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:18,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-12 18:32:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:18,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:18,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:18,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-12 18:32:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:19,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2355 backedges. 741 proven. 1482 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-12 18:32:19,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564243970] [2020-10-12 18:32:19,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:19,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:32:19,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274654325] [2020-10-12 18:32:19,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:32:19,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:19,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:32:19,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:32:19,214 INFO L87 Difference]: Start difference. First operand 461 states and 647 transitions. Second operand 17 states. [2020-10-12 18:32:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:19,696 INFO L93 Difference]: Finished difference Result 963 states and 1412 transitions. [2020-10-12 18:32:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:32:19,697 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 149 [2020-10-12 18:32:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:19,701 INFO L225 Difference]: With dead ends: 963 [2020-10-12 18:32:19,701 INFO L226 Difference]: Without dead ends: 511 [2020-10-12 18:32:19,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:32:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-12 18:32:19,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 491. [2020-10-12 18:32:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-10-12 18:32:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 687 transitions. [2020-10-12 18:32:19,744 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 687 transitions. Word has length 149 [2020-10-12 18:32:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:19,745 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 687 transitions. [2020-10-12 18:32:19,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:32:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 687 transitions. [2020-10-12 18:32:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:32:19,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:19,753 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:19,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:32:19,754 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:19,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2044171818, now seen corresponding path program 14 times [2020-10-12 18:32:19,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:19,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042233644] [2020-10-12 18:32:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:32:24,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:24,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-12 18:32:24,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-12 18:32:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:24,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:24,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:24,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:24,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:24,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:24,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:24,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:25,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 18:32:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:25,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:32:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:26,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:32:26,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2724 backedges. 861 proven. 1722 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:32:26,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042233644] [2020-10-12 18:32:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:26,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:32:26,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734696579] [2020-10-12 18:32:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:32:26,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:32:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:32:26,261 INFO L87 Difference]: Start difference. First operand 491 states and 687 transitions. Second operand 18 states. [2020-10-12 18:32:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:26,770 INFO L93 Difference]: Finished difference Result 1003 states and 1427 transitions. [2020-10-12 18:32:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:32:26,771 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 158 [2020-10-12 18:32:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:26,776 INFO L225 Difference]: With dead ends: 1003 [2020-10-12 18:32:26,777 INFO L226 Difference]: Without dead ends: 541 [2020-10-12 18:32:26,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:32:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-10-12 18:32:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 521. [2020-10-12 18:32:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-10-12 18:32:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 727 transitions. [2020-10-12 18:32:26,820 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 727 transitions. Word has length 158 [2020-10-12 18:32:26,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:26,821 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 727 transitions. [2020-10-12 18:32:26,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:32:26,821 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 727 transitions. [2020-10-12 18:32:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-12 18:32:26,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:26,828 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:26,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:32:26,829 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:26,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1995098305, now seen corresponding path program 15 times [2020-10-12 18:32:26,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:26,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137203957] [2020-10-12 18:32:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:31,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:31,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:31,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:32,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:32,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:32,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-12 18:32:32,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:32,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:32:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:32,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-12 18:32:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 18:32:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3120 backedges. 990 proven. 1980 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-12 18:32:33,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137203957] [2020-10-12 18:32:33,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:33,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:32:33,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240969038] [2020-10-12 18:32:33,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:32:33,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:33,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:32:33,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:32:33,546 INFO L87 Difference]: Start difference. First operand 521 states and 727 transitions. Second operand 19 states. [2020-10-12 18:32:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:34,113 INFO L93 Difference]: Finished difference Result 1083 states and 1572 transitions. [2020-10-12 18:32:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:32:34,114 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 167 [2020-10-12 18:32:34,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:34,118 INFO L225 Difference]: With dead ends: 1083 [2020-10-12 18:32:34,119 INFO L226 Difference]: Without dead ends: 571 [2020-10-12 18:32:34,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:32:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-10-12 18:32:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 551. [2020-10-12 18:32:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 551 states. [2020-10-12 18:32:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 767 transitions. [2020-10-12 18:32:34,164 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 767 transitions. Word has length 167 [2020-10-12 18:32:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:34,164 INFO L479 AbstractCegarLoop]: Abstraction has 551 states and 767 transitions. [2020-10-12 18:32:34,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:32:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 767 transitions. [2020-10-12 18:32:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:32:34,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:34,172 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:34,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:32:34,173 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 293362678, now seen corresponding path program 16 times [2020-10-12 18:32:34,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:34,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993735016] [2020-10-12 18:32:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:39,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:39,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:39,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:39,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:39,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:39,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:32:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:40,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:40,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:32:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:40,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:41,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:41,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-12 18:32:41,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:32:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:41,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:32:41,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3543 backedges. 1128 proven. 2256 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:32:41,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993735016] [2020-10-12 18:32:41,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:41,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:32:41,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405601770] [2020-10-12 18:32:41,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:32:41,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:41,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:32:41,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:32:41,043 INFO L87 Difference]: Start difference. First operand 551 states and 767 transitions. Second operand 20 states. [2020-10-12 18:32:41,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:41,521 INFO L93 Difference]: Finished difference Result 1123 states and 1587 transitions. [2020-10-12 18:32:41,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:32:41,522 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-10-12 18:32:41,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:41,526 INFO L225 Difference]: With dead ends: 1123 [2020-10-12 18:32:41,526 INFO L226 Difference]: Without dead ends: 601 [2020-10-12 18:32:41,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:32:41,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-10-12 18:32:41,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 581. [2020-10-12 18:32:41,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-12 18:32:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 807 transitions. [2020-10-12 18:32:41,579 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 807 transitions. Word has length 176 [2020-10-12 18:32:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:41,579 INFO L479 AbstractCegarLoop]: Abstraction has 581 states and 807 transitions. [2020-10-12 18:32:41,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:32:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 807 transitions. [2020-10-12 18:32:41,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-12 18:32:41,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:41,587 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:41,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:32:41,588 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:41,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:41,588 INFO L82 PathProgramCache]: Analyzing trace with hash 2069659167, now seen corresponding path program 17 times [2020-10-12 18:32:41,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:41,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209064971] [2020-10-12 18:32:41,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:46,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:46,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:46,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:46,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:46,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:46,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:46,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:46,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:46,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:46,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:46,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:46,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 646 [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:47,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:47,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-12 18:32:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:48,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:48,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:48,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:48,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-12 18:32:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:48,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:32:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 18:32:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3993 backedges. 1275 proven. 2550 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-10-12 18:32:48,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209064971] [2020-10-12 18:32:48,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:48,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:32:48,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215104756] [2020-10-12 18:32:48,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:32:48,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:48,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:32:48,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:32:48,738 INFO L87 Difference]: Start difference. First operand 581 states and 807 transitions. Second operand 21 states. [2020-10-12 18:32:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:49,361 INFO L93 Difference]: Finished difference Result 1203 states and 1732 transitions. [2020-10-12 18:32:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:32:49,362 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 185 [2020-10-12 18:32:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:49,367 INFO L225 Difference]: With dead ends: 1203 [2020-10-12 18:32:49,367 INFO L226 Difference]: Without dead ends: 631 [2020-10-12 18:32:49,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:32:49,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-12 18:32:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 611. [2020-10-12 18:32:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-12 18:32:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 847 transitions. [2020-10-12 18:32:49,426 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 847 transitions. Word has length 185 [2020-10-12 18:32:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:49,426 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 847 transitions. [2020-10-12 18:32:49,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:32:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 847 transitions. [2020-10-12 18:32:49,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 18:32:49,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:49,436 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:49,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:32:49,437 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:49,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1611843094, now seen corresponding path program 18 times [2020-10-12 18:32:49,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:49,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129898671] [2020-10-12 18:32:49,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:49,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:49,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:54,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:54,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:54,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:54,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:54,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:54,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:55,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 726 [2020-10-12 18:32:55,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:55,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 18:32:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:55,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:56,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:56,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:56,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:56,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-12 18:32:56,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:56,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:56,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:56,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:32:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:56,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:56,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:56,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:32:56,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4470 backedges. 1431 proven. 2862 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 18:32:56,675 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129898671] [2020-10-12 18:32:56,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:56,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:32:56,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146412378] [2020-10-12 18:32:56,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:32:56,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:56,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:32:56,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:32:56,677 INFO L87 Difference]: Start difference. First operand 611 states and 847 transitions. Second operand 22 states. [2020-10-12 18:32:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:57,500 INFO L93 Difference]: Finished difference Result 1243 states and 1747 transitions. [2020-10-12 18:32:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:32:57,500 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 194 [2020-10-12 18:32:57,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:57,507 INFO L225 Difference]: With dead ends: 1243 [2020-10-12 18:32:57,507 INFO L226 Difference]: Without dead ends: 661 [2020-10-12 18:32:57,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:32:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-10-12 18:32:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 641. [2020-10-12 18:32:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2020-10-12 18:32:57,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 887 transitions. [2020-10-12 18:32:57,578 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 887 transitions. Word has length 194 [2020-10-12 18:32:57,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:57,578 INFO L479 AbstractCegarLoop]: Abstraction has 641 states and 887 transitions. [2020-10-12 18:32:57,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:32:57,579 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 887 transitions. [2020-10-12 18:32:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 18:32:57,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:57,594 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:57,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:32:57,594 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:57,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:57,595 INFO L82 PathProgramCache]: Analyzing trace with hash -788738817, now seen corresponding path program 19 times [2020-10-12 18:32:57,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:57,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511114143] [2020-10-12 18:32:57,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:57,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:57,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:02,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5068 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:33:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:02,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:02,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:02,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:02,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:02,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:02,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:02,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:33:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:03,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:33:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:03,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:04,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:33:04,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:04,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-12 18:33:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:05,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:05,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-12 18:33:05,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-12 18:33:05,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:05,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-12 18:33:05,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4974 backedges. 1596 proven. 3192 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-12 18:33:05,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511114143] [2020-10-12 18:33:05,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:05,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:33:05,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313487146] [2020-10-12 18:33:05,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:33:05,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:33:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:33:05,279 INFO L87 Difference]: Start difference. First operand 641 states and 887 transitions. Second operand 23 states. [2020-10-12 18:33:05,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:05,974 INFO L93 Difference]: Finished difference Result 1303 states and 1862 transitions. [2020-10-12 18:33:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:33:05,974 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 203 [2020-10-12 18:33:05,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:05,979 INFO L225 Difference]: With dead ends: 1303 [2020-10-12 18:33:05,980 INFO L226 Difference]: Without dead ends: 671 [2020-10-12 18:33:05,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:33:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2020-10-12 18:33:06,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2020-10-12 18:33:06,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-12 18:33:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 927 transitions. [2020-10-12 18:33:06,029 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 927 transitions. Word has length 203 [2020-10-12 18:33:06,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:06,029 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 927 transitions. [2020-10-12 18:33:06,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:33:06,030 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 927 transitions. [2020-10-12 18:33:06,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:33:06,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:06,038 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:06,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:33:06,039 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:06,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:06,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1421498314, now seen corresponding path program 20 times [2020-10-12 18:33:06,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:06,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188882189] [2020-10-12 18:33:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:07,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:11,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:33:11,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5175 [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-12 18:33:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:11,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:11,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:11,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:11,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:33:11,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:11,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:11,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:11,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:11,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:12,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:33:12,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:13,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:33:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:13,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:14,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:14,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 18:33:14,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:33:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:14,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:15,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:15,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 18:33:15,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:33:15,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188882189] [2020-10-12 18:33:15,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:15,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 18:33:15,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988692741] [2020-10-12 18:33:15,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 18:33:15,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:15,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 18:33:15,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=870, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:33:15,800 INFO L87 Difference]: Start difference. First operand 671 states and 927 transitions. Second operand 31 states. [2020-10-12 18:33:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:20,078 INFO L93 Difference]: Finished difference Result 1850 states and 3501 transitions. [2020-10-12 18:33:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:33:20,078 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 212 [2020-10-12 18:33:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:20,098 INFO L225 Difference]: With dead ends: 1850 [2020-10-12 18:33:20,099 INFO L226 Difference]: Without dead ends: 1846 [2020-10-12 18:33:20,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=164, Invalid=2916, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 18:33:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2020-10-12 18:33:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1641. [2020-10-12 18:33:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2020-10-12 18:33:20,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2318 transitions. [2020-10-12 18:33:20,391 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2318 transitions. Word has length 212 [2020-10-12 18:33:20,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:20,391 INFO L479 AbstractCegarLoop]: Abstraction has 1641 states and 2318 transitions. [2020-10-12 18:33:20,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 18:33:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2318 transitions. [2020-10-12 18:33:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:33:20,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:20,416 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 59, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:20,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:33:20,416 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:20,416 INFO L82 PathProgramCache]: Analyzing trace with hash -741439944, now seen corresponding path program 3 times [2020-10-12 18:33:20,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:20,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340424036] [2020-10-12 18:33:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:20,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:25,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:33:25,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-10-12 18:33:25,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:25,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:25,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:25,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:25,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:25,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:33:26,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:26,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:26,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:27,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:33:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:27,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:27,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:33:27,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:27,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:33:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 18:33:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 613 proven. 4337 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2020-10-12 18:33:31,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340424036] [2020-10-12 18:33:31,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:31,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-12 18:33:31,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922421900] [2020-10-12 18:33:31,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-12 18:33:31,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:31,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-12 18:33:31,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2756, Unknown=0, NotChecked=0, Total=3080 [2020-10-12 18:33:31,539 INFO L87 Difference]: Start difference. First operand 1641 states and 2318 transitions. Second operand 56 states. [2020-10-12 18:33:53,315 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 18:34:12,367 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 18:34:19,817 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 18:34:20,093 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 18:34:20,331 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91